Carpenter ants are large black or reddish-brown insects that can grow up to 1 inch long. They are known for their ability to excavate wood to create nests, which can lead to structural damage in homes and buildings. Unlike termites, they do not eat wood but remove it to create tunnels and galleries. These ants are social insects that live in colonies, often consisting of thousands of individuals. They are typically active at night and can be found in various habitats, including forests and urban areas. Carpenter ants are attracted to moist wood, making them more likely to infest areas with water damage.